Avert W. Vannette

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Pella, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Undercut trenching machine
- Patent number 5,074,063
- Issue date Dec 24, 1991
- Pella Engineering & Reseach Corporation
- Avert W. Vannette
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING